Video: The world's oceans – B.C.'s Salish Sea marine mammals return

Lance Barrett-Lennard, senior scientist, Vancouver Aquarium, discusses the return of marine mammals to the Salish Sea with Vancouver Sun reporter Larry Pynn. Larry Pynn talks to experts about the health of the world's oceans as part of a six-part series on the State of the Salish Sea.

Lance Barrett-Lennard, senior scientist, Vancouver Aquarium, discusses the return of marine mammals to the Salish Sea with Vancouver Sun reporter Larry Pynn. Larry Pynn talks to experts about the health of the world's oceans as part of a six-part series on the State of the Salish Sea.